Sakuya is the sole human residing in the Scarlet Devil Mansion and serves as its head maid. According to Hieda no Akyuu, it's theorized that Sakuya was once a vampire hunter before her employment at the mansion. After being defeated by Remilia Scarlet, she was given her current name and began serving the household, though this remains unconfirmed.
Although she appears to be around sixteen, similar to the other girls, Sakuya possesses the unique ability to manipulate time—slowing, stopping, and possibly even reversing it. She has been in service to Remilia for an extended period and may be much older than she looks. Socially, her interactions are primarily with the inhabitants of the Scarlet Devil Mansion.
Her skills include cooking, knife throwing, and time manipulation. The latter two abilities are prominently featured in-game and have led to frequent parodies likening her to Dio Brando from JoJo's Bizarre Adventure, who also controls time and throws knives. This reference is so strong that Sakuya even adopts some of his poses in one of the games. Other characters often associate her with dogs due to her role as a "faithful guard dog" to a demon, despite being fully human.
(Source: Wikipedia)
